EP2340951A2 - System zum Befestigen von Batterien in elektrischen Fahrzeugen - Google Patents

System zum Befestigen von Batterien in elektrischen Fahrzeugen Download PDF

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Publication number
EP2340951A2
EP2340951A2 EP11161769A EP11161769A EP2340951A2 EP 2340951 A2 EP2340951 A2 EP 2340951A2 EP 11161769 A EP11161769 A EP 11161769A EP 11161769 A EP11161769 A EP 11161769A EP 2340951 A2 EP2340951 A2 EP 2340951A2
Authority
EP
European Patent Office
Prior art keywords
battery
vehicle
latch
battery pack
bay
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11161769A
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English (en)
French (fr)
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EP2340951B1 (de
EP2340951A3 (de
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Better Place GmbH
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Better Place GmbH
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Filing date
Publication date
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Publication of EP2340951A3 publication Critical patent/EP2340951A3/de
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Publication of EP2340951B1 publication Critical patent/EP2340951B1/de
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Anticipated expiration legal-status Critical

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/51—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells characterised by AC-motors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/66—Arrangements of batteries
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
    • B60L53/11—DC charging controlled by the charging station, e.g. mode 4
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/80—Exchanging energy storage elements, e.g. removable batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/202—Casings or frames around the primary casing of a single cell or a single battery
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/242—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries against vibrations, collision impact or swelling
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
    • B60K2001/0438—Arrangement under the floor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K1/00—Arrangement or mounting of electrical propulsion units
    • B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
    • B60K2001/0455—Removal or replacement of the energy storages
    • B60K2001/0472—Removal or replacement of the energy storages from below
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2200/00—Type of vehicles
    • B60L2200/26—Rail vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/12—Electric charging stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49815—Disassembling

Definitions

  • the disclosed embodiments relate generally to electric vehicles with removable battery packs.
  • the disclosed embodiments relate to connector mechanisms for establishing electrical and data connections between a removable battery pack and an electric vehicle.
  • the vehicle e.g ., cars, trucks, planes, boats, motorcycles, autonomous vehicles, robots, forklift trucks etc .
  • fossil fuels like oil which is typically used to power such vehicles
  • have numerous drawbacks including: a dependence on limited foreign sources of fossil fuels; these foreign sources are often in volatile geographic locations; and such fuels produce pollution and climate change.
  • One way to address these problems is to increase the fuel economy of these vehicles.
  • gasoline-electric hybrid vehicles have been introduced, which consume substantially less fuel than their traditional internal combustion counterparts, i.e. , they have better fuel economy.
  • gasoline-electric hybrid vehicles do not eliminate the need for fossil fuels, as they still require an internal combustion engine in addition to the electric motor.
  • Bio-fuels are currently expensive and years away from widespread commercial use.
  • the existing art utilizes permanent batteries that can be re-charged.
  • removable batteries are utilized.
  • forming an electrical connection where there is an initial misalignment between the battery and the vehicle can be challenging.
  • both power connections and data connections are encompassed in the same electrical connection system.
  • the high voltage power connection creates electromagnetic interference with the data connection if the connections are in close proximity.
  • the data connection and power connection can be moved far apart from each other such that they do not interfere.
  • moving these connectors away from each other requires creating two separate connection assemblies, which adds cost and complexity to the system.
  • a network of charge spots and battery exchange stations are deployed to provide the EV (electric vehicle) user with the ability to keep his or her vehicle charged and available for use at all times.
  • Some embodiments provide a system and method to quickly exchange, a spent depleted (or substantially discharged) battery pack for a fully charged (or substantially fully charged) battery pack at a battery exchange station.
  • the quick exchange is performed in a period of time significantly less than that required to recharge a battery.
  • the long battery recharge time may no longer be relevant to a user of an electric vehicle who is traveling beyond the range of the battery.
  • the cost of the electric vehicle can be substantially reduced because the battery of the electric vehicle can be separated from the initial cost of the vehicle.
  • the battery can be owned by a party other than the user of the vehicle, such as a financial institution or a service provider.
  • a party other than the user of the vehicle such as a financial institution or a service provider.
  • the batteries may be treated as components of the electric recharge grid (ERG) infrastructure to be monetized over a long period of time, and not a part of the vehicle purchased by the consumer.
  • ESG electric recharge grid
  • the following provides a detailed description of a system and method for swapping-out or replacing battery packs in electric vehicles. Some embodiments provide a description of the quick exchangeable battery packs attached to the vehicle.
  • a battery bay configured to be disposed at an underside of an at least partially electric vehicle.
  • the battery bay includes a frame that defines a cavity configured to at least partially receive a battery pack therein.
  • the frame of the battery bay forms part of the structure of the vehicle body and is not a separate component.
  • the battery bay also includes at least one latch mechanism rotatably pivoted about an axis substantially parallel with a plane formed by an underside of the vehicle (and/or the surface on which the vehicle is configured to travel, e.g ., the road).
  • the latch mechanism is configured to retain the battery pack at least partially within the cavity.
  • an additional latch is rotatably pivoted about an additional axis substantially parallel to and distinct from the first axis.
  • the axis and the additional axis are substantially perpendicular to a length of the vehicle.
  • a transmission assembly is mechanically coupled to the latch and the additional latch, the transmission assembly is configured to simultaneously rotate the latch and the additional latch in rotational directions opposite to one another.
  • an electric motor is mechanically coupled to the frame for driving the transmission assembly.
  • the transmission assembly is configured to be driven by a rotation mechanism external to the vehicle.
  • Some embodiments provide a method of removing a battery pack from an underside of an at least partially electric vehicle.
  • the method includes rotating a latch mechanism mechanically coupled to a vehicle so as to disengage contact between the latch and a battery pack disposed at an underside of at least partially electric vehicle.
  • the battery pack is then translated away from the underside of the vehicle.
  • the method of removal involves, prior to the rotating, mechanically disengaging a first lock mechanism.
  • the method of removal involves, prior to the rotating, electronically disengaging a second lock mechanism.
  • the method of removal involves occurs in less than one minute.
  • Some embodiments provide another method of coupling a battery pack to an electric vehicle.
  • the method of coupling includes substantially simultaneously engaging a first latch located at a front end of the underside of the electric vehicle with a first striker located at a front end of a battery pack and a second latch located at a back end of the underside of the electric vehicle with a second striker located at a back end of a battery pack. Then, the battery pack is substantially simultaneously locked into the electric vehicle by rotating the first and second latches into their respective physical lock positions.
  • the method of coupling further comprises substantially simultaneously vertically lifting the battery pack into the electric vehicle by rotating the first and second latches in opposite directions, which engages with and raises the battery pack.
  • Some embodiments provide a battery system that includes a battery bay for receiving a battery pack.
  • the battery bay is located at an underside of the electric vehicle.
  • the battery bay includes a first latch configured to mechanically couple a front end of the battery pack to a front end of the underside of the electric vehicle, and a second latch configured to mechanically couple a back end of the battery pack to a back end of the underside of the electric vehicle.
  • the first latch and the second latch mechanically couple the battery pack to the underside of the electric vehicle by engaging, vertically lifting, and locking the front and back ends of the battery pack to the electric vehicle substantially simultaneously.
  • Some embodiments provide a battery system that includes a battery pack configured to be mechanically coupled to an underside of an electric vehicle, a first latch configured to mechanically couple a proximate end of the battery pack to a proximate end of the underside of the electric vehicle, and a second latch configured to mechanically couple a distal end of the battery pack to a distal end of the underside of the electric vehicle.
  • the first latch and the second latch mechanically couple the battery pack to the underside of the electric vehicle substantially simultaneously.
  • the battery bay includes a latch that is attached to the frame at a first side of the cavity.
  • the battery bay also includes at least one additional latch attached to the frame at a second side of the cavity opposite the first side of the cavity.
  • the additional latch is rotatably pivoted about another axis substantially parallel with the plane formed by the underside of the vehicle.
  • the additional latch is configured to retain the battery pack at least partially within the cavity.
  • the battery bay's latch has a proximate end which rotates about the axis and a distal end remote from the proximate end that is configured to engage a bar shaped striker on the battery pack.
  • the distal end of the latch has a hook shape.
  • the frame is formed integrally with a frame of the vehicle. In some embodiments, the frame is a separate unit configured to attach to the at least partially electric vehicle. In some embodiments, the frame is located between a front axle and a rear axle of the partially electric vehicle. In some embodiments, the frame defines a substantially rectangular shaped opening, having two long sides and two short sides. In some embodiments, the frame defines an opening having five, six, or more sides defining any shape configured to receive a corresponding battery pack. In some embodiments, the long sides extend along axes substantially parallel (or near parallel) with an axis extending from the front to the back of the vehicle. In some embodiments, the frame defines a substantially cuboid shaped cavity for at least partially receiving the battery pack therein.
  • the battery bay has one or more vibration dampers that are disposed between the frame and the at least partially electric vehicle.
  • the latch and the additional latch substantially simultaneously rotate in opposite directions about their respective axes.
  • the battery pack is engaged and locked into the at least partially electric vehicle when the latches substantially simultaneously rotate towards one another. In some embodiments, the battery pack is disengaged and unlocked from the at least partially electric vehicle when the latches substantially simultaneously rotate away from one another.
  • the latch and the additional latch are configured to mechanically decouple the battery pack from the underside of the at least partially electric vehicle substantially simultaneously.
  • the latch (or latch mechanism) is part of a four bar linkage mechanism.
  • the four bar linkage mechanism includes: a latch housing, a input link including a first pivot point and a second pivot point, wherein the first pivot point is pivotably coupled to a proximate end of the latch housing; a latch including a third pivot point and a fourth pivot point; and a coupler link rod including a first rod end and a second rod end.
  • the fourth pivot point is pivotably coupled to a distal end of the latch housing.
  • the first rod end is pivotably coupled to the second pivot point of the input link.
  • the second rod end is also pivotably coupled to the third pivot point of the latch.
  • the coupler link rod includes an adjustment bolt configured to adjust a length of the coupler link rod.
  • the latch when the input link is in a first position, the latch is configured to mechanically decouple from a striker of the battery pack. In some embodiments, when the input link is in a second position, the latch is in an engaged position configured to mechanically couple to a striker of the battery pack and the input link, the coupler link rod, and the hook are in a geometric lock configuration. In some embodiments, the latch is configured to raise the battery pack along an axis substantially perpendicular to the plane formed by the underside of the vehicle.
  • the battery bay further comprises a battery pack, which comprises: at least one rechargeable battery cell that stores electrical energy, and a housing at least partially enclosing the at least one rechargeable battery cell.
  • the housing further comprises at least one striker having a bar shape, that is configured to engage with the latch.
  • the housing of the battery pack has a height substantially less than its length, wherein a portion of the housing includes a heat exchange mechanism that has at least a portion thereof exposed to ambient air at the underside of the vehicle when the battery pack is attached to the vehicle.
  • the battery pack when attached to the vehicle, at least partially protrudes below the plane of the underside of the electric vehicle.
  • a portion of the housing includes a heat exchange mechanism that has at least a portion thereof exposed to ambient air at the underside of the vehicle, when the battery pack is attached to the vehicle.
  • the heat exchange mechanism is selected from at least one of: a heat sink; a heat exchanger; a cold plate; and a combination of the aforementioned mechanisms.
  • the heat exchange mechanism is a cooling mechanism that includes a duct running through the housing.
  • the cooling duct includes a plurality of fins.
  • the cooling duct includes a scooped inlet.
  • the scooped inlet contains a filter to prevent debris from entering the cooling duct.
  • the battery bay further includes a battery pack.
  • the battery pack includes a housing configured to substantially fill a cavity in a battery bay of the vehicle.
  • the housing includes: a first side wall; a second side wall opposing the first side wall; at least one first striker disposed at the first side wall having a bar shape wherein the central axis of the first striker is parallel to the first side wall; at least one second striker disposed at the second side wall having a bar shape wherein the central axis of the second striker is parallel to the second side wall; and at least one battery cell that stores electrical energy.
  • the battery cell is at least partially enclosed within the housing.
  • the bar shaped strikers have some anti-friction attachments such as roller bearings or low friction surface treatments.
  • the frame of the battery bay further includes at least one alignment socket configured to mate with at least one alignment pin on the battery pack.
  • the frame of the battery bay further includes at least one compression spring coupled to the battery bay, wherein the at least one compression spring is configured to generate a force between the battery bay and the battery pack when the battery pack is held at least partially within the cavity.
  • the transmission assembly further includes: a plurality of latches mechanically coupled to a first torque bar.
  • the first torque bar is configured to actuate the latches.
  • Additional latches are mechanically coupled to a second torque bar.
  • the second torque bar is configured to actuate the additional latches.
  • the first torque bar and the second torque bar are configured to substantially simultaneously rotate in opposite directions.
  • the first torque bar is located at a side of the battery bay nearest to a front end of the vehicle.
  • the second torque bar is located at a side of the battery bay nearest to a back end of the vehicle.
  • the transmission assembly further includes a first gear shaft coupled to a first torque bar via a first worm gear set, and a second gear shaft coupled to a second torque bar via a second worm gear set.
  • the first gear shaft and the second gear shaft substantially simultaneously rotate in opposite directions causing the first torque bar and the second torque bar to substantially simultaneously rotate in opposite directions via the first worm gear set and second worm gear set.
  • the first gear shaft comprises two shafts joined by a universal joint.
  • the design may include left and right worm gear set, a design which does not require the gear shafts to rotate in opposite directions.
  • the transmission assembly further includes a miter gear set coupled to the first gear shaft and a second gear shaft.
  • the miter gear set is configured to synchronously rotate the first and second gear shafts in opposite directions.
  • the transmission assembly further includes a drive motor coupled to the miter gear set via a gear ratio set.
  • the drive motor is configured to rotate the first and second gear shafts in opposite directions via the gear ratio set and the miter gear set.
  • the transmission assembly further includes a drive socket located at an underside of the electric vehicle.
  • the socket is coupled to the central gear of the miter gear set. Rotation of the socket actuates the miter gear set.
  • the drive socket has a non-standard shape for receiving a socket wrench having a head corresponding to the non-standard shape.
  • the transmission assembly further includes a miter gear lock configured to prevent the miter gear set from rotating.
  • the miter gear lock is configured to be released with a key.
  • the key physically unlocks the miter gear lock.
  • miter gear lock is spring loaded.
  • the battery bay further includes one or more latch locks, which when engaged, are configured to prevent the at least one latch from rotating.
  • the latch lock further includes a lock synchronization bar coupled to the one or more latch locks and a lock actuator coupled to the lock synchronization bar.
  • the lock synchronization bar is configured to actuate the one or more latch locks.
  • the lock actuator is configured to actuate the lock synchronization bar.
  • the one or more latch locks are lock bolts.
  • the lock actuator is coupled to an electric motor configured to actuate the lock synchronization bar via the lock actuator.
  • the lock synchronization bar is configured to rotate the one or more latch locks in a first direction so that the one or more latch locks become engaged, and wherein the lock synchronization bar is configured to rotate the one or more latch locks in a second direction so that the one or more latch locks become disengaged.
  • the battery bay further comprises one or more latch locks, which when engaged, are configured to prevent the at least one latch from rotating.
  • the one or more latch locks are configured to disengage only when the miter gear lock has been released.
  • the battery bay further comprises a latch position indicator configured to determine an engaged position and a disengaged position of the latch.
  • the latches are synchronized electronically without the presence of mechanical coupling.
  • An individual latch unit containing internal electric motor and transmission performs the latching operation.
  • a control unit is utilized to synchronize and control the operation of all latches.
  • the engaging (coupling) and disengaging (uncoupling) of a removable battery pack may happen many times over the lifecycle of the at least partially electric vehicle.
  • the battery pack and vehicle should withstand up to 3000 cycles of engaging and disengaging.
  • the components should withstand up to 5000 cycles.
  • a high electrical voltage and current may be transmitted between the battery pack and the vehicle for the battery pack to power the electric vehicle.
  • the battery pack also contains circuitry to communicate data to the vehicle.
  • Such "smart" batteries provide information to the vehicle's computer systems regarding battery charge, battery health, remaining range, or other pertinent information.
  • a data signal path is also formed between the battery pack and the vehicle in each engagement.
  • the power and data contacts on the battery pack and the electrical and data contacts on the vehicle must be properly aligned with one another.
  • the small data and power pins and sockets should be precisely aligned to form appropriate electrical connections.
  • the data and power connectors must remain in contact with each other and withstand rigorous factors caused by daily driving such as vertical and horizontal shock and vibration, impact etc.
  • connection system described herein provides for a quick connect/disconnect system that compensates for misalignments that may occur between the battery-side connector and the vehicle-side connector during the removal and replacement of the battery.
  • These embodiments provide structural flexibility for the coupling portions of the battery and vehicle to be moved into proper alignment through alignment mechanisms such as pin and socket alignment mechanisms.
  • These embodiments also provide one or more misalignment relief mechanisms.
  • at least one connector in connection system includes a coupler designed to allow movement between a fixed mounting portion directly attached to the battery or vehicle respectively and a free coupling portion containing the data and power interfaces of the connector.
  • the allowed movement there between is horizontal, or substantially parallel to the X-Z plane of the underside of the vehicle. In some embodiments, the allowed movement is also vertical.
  • the coupler includes a spring which in addition to aiding in compensating for misalignments also provides vertical force to keep the electrical and data components connected to one another.
  • Some of these embodiments also employ data and power sockets with conductive mesh sleeves capable of remaining in electrical contact with their corresponding data and power pins despite the vibration and jarring of daily driving and are further capable of withstanding the 3000 or more engagement cycles.
  • the data connection between the battery pack and the vehicle are both located in the same electrical connection system having precise alignment capabilities.
  • a single battery side connector component contains both data and power interfaces
  • a single vehicle side connector component also contains both data and power interfaces.
  • One advantage of providing a data connection and a power connection in the same electrical connection system is that one electrical connection system can be used to align both power and data interfaces simultaneously.
  • data communication conductors are susceptible to electromagnetic interference caused by proximity to high voltage or high current conductors. Sometimes electromagnetic interference can be overcome by maintaining a substantial distance between any high voltage or high current conductor and any data or signal conductors.
  • the electrical connection system also has shielding mechanisms that shield data interfaces from electromagnetic interference caused by high voltage electrical interfaces located near one another in the connection system.
  • the data connectors and the electrical connectors are within one inch of each other.
  • the electrical and data connections are located on separate connection systems each having separate alignment mechanisms like those of the electrical connection system described below.
  • latching mechanisms on the electrical connection system do not require additional clamping or latching mechanisms to ensure positive contact between the power and data interfaces. Instead, the components of the electrical connection system embodiments are held in contact with one another through the latch mechanisms in the battery bay. Because the alignment mechanisms employed in the connection system embodiments compensate for initial misalignments between the battery pack and the vehicle, battery packs can be quickly removed and inserted into the vehicle's battery bay without additional concern for latching or aligning a complicated electrical connector. Additionally, the latching mechanism secures the battery with adequate force to maintain the connection between the vehicle-side and battery-side connectors. By reducing the steps and complexity of the battery swapping process, electric vehicles are more convenient for everyday use.
  • Some embodiments provide an electrical connection system for a battery of an at least partially electric vehicle.
  • the electrical connection system utilizes a shielding mechanism with the vehicle-side connector and the battery-side connector as follows.
  • the vehicle-side connector is configured to permanently attach to an underside of an at least partially electric vehicle.
  • the battery-side connector is configured to permanently attach to a battery pack.
  • the battery-side connector is configured to mate to the vehicle-side connector.
  • the battery-side connector and the vehicle-side connector also are configured to removably couple to each other, along an axis substantially perpendicular to the underside of the at least partially electric vehicle.
  • Each electrical connector includes a high voltage interface for transmitting high voltage electricity between the electrical connectors a data interface for transmitting data between the electrical connectors.
  • the electrical connection system also includes a shielding mechanism to counteract electromagnetic effects caused by the high voltage connection elements.
  • the shielding mechanisms separate the data interface from the high voltage interface to counteract electromagnetic effects caused by the high voltage connection elements.
  • the shielding mechanism comprises a housing that substantially covers the data interface. In some embodiments, the housing is L-shaped.
  • the electrical connection system further comprises a sealing mechanism positioned between the first and second electrical connectors for preventing environmental contamination when the first and second electrical connectors are coupled.
  • the high voltage interface includes conductive pins; and sockets for receiving the conductive pins.
  • the sockets are made of a conductive mesh sleeve for forming an electrical connection with the conductive pins.
  • the data interface also has pins and sockets where the sockets are made of a conductive mesh sleeve.
  • the data interface comprises a fiber optic interface.
  • the high voltage electricity is between about 100 and 1000 VDC. In other embodiments, the high voltage electricity is between about 200 and 800 VDC. In yet other embodiments, the high voltage electricity is between about 350 and 450 VDC.
  • the electrical connection system utilizes a coupling mechanism for compensating for misalignment between the vehicle-side connector and the battery-side connector as follows.
  • the electrical connection system includes a first electrical connector, a second electrical connector, and a coupler for compensating for misalignment between the first and second electrical connectors.
  • the first electrical connector is configured to mount to an underside of an at least partially electric vehicle. It includes a first coupling portion for mating with a second coupling portion of a second electrical connector.
  • the second electrical connector is configured to mount to a battery and comprises a second coupling portion for mating with the first coupling portion of the first electrical connector.
  • the first and second coupling portions include a high voltage interface for transmitting high voltage electricity and a data interface for transmitting data between the first and second coupling portions.
  • the coupling portion is on the vehicle side connector. In other embodiments the coupling portion is on the battery side connector.
  • connection system for a battery of an at least partially electric vehicle includes one or more coupling portions for compensating for misalignment between the vehicle-side connector and the battery-side connector as follows.
  • a first electrical connector is configured to mount to an underside of an at least partially electric vehicle.
  • the first electrical connector includes a first coupling portion for mating with a second coupling portion of a second electrical connector, a first mounting portion for attaching the first electrical connector to the at least partially electric vehicle, and a first coupler for attaching the first coupling portion to the first mounting portion.
  • the first coupler allows relative motion between the first coupling portion and the first mounting portion.
  • a second electrical connector is configured to mount to a battery.
  • the second electrical connector includes a second coupling portion for mating with the first coupling portion of the first electrical connector.
  • the first coupler compensates for misalignment between the first and second electrical connectors.
  • the first and second coupling portions include a high voltage interface for transmitting high voltage electricity and a data interface for transmitting data between the first and second coupling portions.
  • the second electrical connector also includes a second mounting portion for attaching the second electrical connector to the battery and a second coupler for attaching the second coupling portion to the second mounting portion.
  • the second coupler allows for relative motion between the second coupling portion and the second mounting portion.
  • the second coupler also compensates for misalignment between the first and second electrical connectors.
  • the first coupler is configured to allow the first coupling portion to move in vertical and horizontal planes with respect to the first mounting portion.
  • the first coupler is made of a hole in the first coupling portion and a bolt rigidly attached to the first mounting portion and extending through the hole in the first coupling portion, where the bolt has a smaller diameter than the hole.
  • the first coupler further includes a coil spring positioned between the first coupling portion and the first mounting portion. In some embodiments, the bolt extends through the center of the coil spring.
  • the first coupling portion of the electrical connection system of claim includes a pin and a socket.
  • the pin and socket are configured to ensure lateral alignment between the first and second coupling portions.
  • the inside surface of the socket is a channel having an oval cross section. The channel has an inside surface larger than the pin to allow for space between a portion of the inside surface of the channel and a portion of the outside surface of the pin.
  • misalignment between the electrical interface components of a battery and its corresponding bay in an electric vehicle are compensated for by the alignment and misalignment compensation mechanisms described.
  • electromagnetic interference caused by high voltage power connections is overcome or alleviated by various shielding mechanisms.
  • both misalignment and electromagnetic interference are addressed using a combination of the above described features making a robust battery exchanging system capable of withstanding may exchange cycles.
  • Figure 1 illustrates an electric vehicle network
  • Figures 2A-2B are views of the electric vehicle of Figure 1 .
  • Figure 2A is a bottom view of the electric vehicle and
  • Figure 2B is a side view of the electric vehicle.
  • Figures 3A and 3B are underside perspective views of the electric vehicle and battery pack of Figure 1 .
  • Figure 4 is a perspective view of one embodiment of the battery pack of Figures 1-3 .
  • Figure 5 is a perspective view of one embodiment of the battery pack of Figures 1-3 showing various chemical modules or cells.
  • Figure 6 is a perspective view of one embodiment of a battery pack with a first cooling system.
  • Figure 7 is a bottom perspective view of another embodiment of a battery pack with a second cooling system.
  • Figure 8 is a perspective view of another embodiment of a battery pack.
  • Figure 9 is a perspective view of an electrical connection system.
  • Figure 10 is a perspective view of an embodiment of a battery pack connected to a battery bay and the battery bay's transmission assembly.
  • Figure 11 is a perspective view of another embodiment of a battery bay.
  • Figure 12 is a close-up oblique view of an embodiment of the worm gear set of Figure 11 .
  • Figure 13 is a close-up perspective view of an embodiment of a first gear set mechanism of Figure 11 .
  • Figure 14 is a close-up perspective view of the underside of the battery and bay including a close-up view of an embodiment of a drive socket.
  • Figure 15 is a perspective view of one embodiment of a gear lock.
  • Figure 16 is a perspective view of another embodiment of a gear lock.
  • Figure 17 is a close-up perspective view of a key inserted into a key hole and releasing the gear lock of Figure 16 .
  • Figure 18 is a close-up perspective view of an embodiment a battery bay with several alignment sockets configured to mate with alignment pins on the battery pack.
  • Figures 19A-19C are side views of a latch mechanism at various positions.
  • Figure 20 is a close-up perspective view of the latch lock mechanism of the battery bay.
  • Figure 21 is a flow diagram of a process for releasing a battery pack from a battery bay.
  • Figure 22 is a flow diagram of a process for engaging a battery pack to a battery bay.
  • Figures 23A and 23B are perspective and close-up perspective views respectively of another embodiment of a transmission assembly of a battery bay.
  • Figures 24A is a top perspective view of an electrical connection system.
  • Figure 24B is a bottom perspective view of the vehicle-side connector of 24A.
  • Figure 25 is a side view of the electrical connection system of Figure 24A .
  • Figure 26 is a cross-sectional side view of the vehicle-side connector portion of the electrical connection system as viewed along line 26-26 of Figure 25 .
  • Figure 27 is a cross-sectional side view of the battery-side connector portion of the electrical connection system as viewed along line 26-26 of Figure 25 .
  • Figure 28 is a perspective view of a conductive mesh sleeve used in the female side of some embodiments of the data and power connectors shown in Figure 24A .
  • Figure 29 is a partially exploded perspective view of a portion of the vehicle-side connector shown in Figure 24B .
  • Figure 30 is a perspective view of an example of a shielding mechanism used in the vehicle-side connector of Figure 29
  • Figure 31 includes planar views of all sides of the shielding mechanism of Figure 29 .
  • FIG. 1 illustrates an electric vehicle network 100, according to some embodiments.
  • the electric vehicle network 100 includes a vehicle 102 and a battery pack 104 configured to be removably mounted to the vehicle 102.
  • the battery pack 104 includes any device capable of storing electric energy such as batteries (e.g ., lithium ion batteries, lead-acid batteries, nickel-metal hydride batteries, etc .), capacitors, reaction cells ( e.g ., Zn-air cell), etc.
  • the battery pack 104 comprises a plurality of individual batteries or battery cells/chemical modules.
  • the battery pack 104 also comprises cooling mechanisms, as well as mechanical and electrical connectors for connecting to the vehicle 102 or to the various elements of the battery exchange station 134. These mechanical and electrical connectors will be described in further detail below.
  • the vehicle 102 includes an electric motor 103 that drives one or more wheels of the vehicle.
  • the electric motor 103 receives energy from the battery pack 104 (shown separate from the vehicle for the ease of explanation).
  • the battery pack 104 of the vehicle 102 may be charged at a home 130 of a user 110 or at one or more charge stations 132.
  • a charge station 132 may be located in a shopping center parking lot.
  • the battery pack 104 of the vehicle 102 can be exchanged for a charged battery pack at one or more battery exchange stations 134.
  • the battery exchange stations 134 are service stations where a user can exchange spent (or partially spent) battery packs 104 of the vehicle 102 for charged battery packs 104.
  • the charge stations 132 provide energy to charge the battery pack 104 while it is coupled to the vehicle 102.
  • FIGS 2A-2B are side and bottom views of an at least partially electric vehicle 102.
  • the vehicle 102 includes a removable battery pack 104 (sometimes herein referred to just as a battery) attached to the vehicle 102 at its underside.
  • the battery pack 104 is substantially flat and runs along at least a portion of the length of the vehicle 102; i.e., along the longitudinal X-axis of the vehicle.
  • the battery 104 may protrude below the plane 204 of the underside of the vehicle 102, i.e. , protruding in the negative Y-axis direction. Protruding from the underside of the vehicle is helpful for air cooling the battery pack 104, as the protruding battery pack is exposed to ambient air flow.
  • the air scoop intake will be exposed to ambient air at the underside of the vehicle 102 to receive air flow when the vehicle 102 is moving forward.
  • the battery pack may protrude from the bottom of the vehicle.
  • cosmetic fairings 202 are attached to the vehicle to hide the battery pack 104.
  • the cosmetic fairings 202 also produce a smooth outline and reduce drag. These cosmetic fairings 202 may be mounted on any or all of the front, sides, and rear of the vehicle.
  • Figures 3A and 3B are underside perspective views of the electric vehicle 102 and battery pack 104 of Figure 1 .
  • Figure 3A shows the battery pack 104 mounted in a battery bay 108.
  • Figure 3B shows the battery pack 104 removed from the battery bay 108.
  • the battery bay 108 includes a frame 118 that defines the outline of a cavity 302 disposed at the underside of the vehicle 102.
  • the cavity 302 is configured to at least partially receive the battery pack 104 therein.
  • the bay frame 118 has a substantially rectangular shape, for at least partially receiving a substantially cuboid or rectangular parallelepiped battery pack 104 therein.
  • the frame 118 has two long sides along at least part of the length of the vehicle 102 (parallel to the X-axis) and two shorter sides along at least part of the width of the vehicle (parallel to the Z-axis) as shown.
  • the long sides of the frame 118 extend along axes substantially parallel with an axis extending from the front to the back of the vehicle 102 (parallel to the X-axis).
  • the battery bay 108 is located under the vehicle floor boards, between the rear and front axles of the vehicle 102.
  • the cavity 302 into which the battery bay 108 is inserted uses existing volumes which are normally occupied by the fuel tank and muffler in a traditional gasoline or hybrid vehicle. In such a manner, the storage and/or passenger volume is not substantially impacted by the addition of the battery pack 104.
  • the vehicle body floor structure is shaped as a basin to accommodate the battery pack. The location of the battery bay 108 at or near the bottom of the vehicle lowers the vehicle's center of mass or gravity, when the battery pack 104 is coupled to the vehicle, which improves the cornering, road-holding, and performance of the vehicle.
  • the battery bay 108 is located within zones of the vehicle that are designed to not buckle during front or rear collisions to protect the battery pack 104.
  • the battery bay 108 is a self-contained unit.
  • the battery bay structural connections to the vehicle frame (or unibody) are made through flexible vibration dampers (not shown). This allows the battery bay 108 to not interfere with the natural bending and torsion deflection of the vehicle frame.
  • the connections to the vehicle frame are made using removable fasteners such as bolts.
  • the battery bay 104 is substantially permanently mounted to the vehicle by welding or other means.
  • the battery bay 108 is designed to withstand the load factors required by an original equipment manufacturer, national safety standards, or international safety standards. In some embodiments, the battery bay 108 is designed to withstand the following load factors:
  • the battery pack 104 does not substantially rock, rattle, or otherwise move.
  • the mechanical connection between the battery bay 108 and the vehicle frame is provided during the assembly of the vehicle 102.
  • the battery bay 108 is a separate unit configured to attach to the at least partially electric vehicle 102.
  • the separate unit style battery bay 108 is retrofitted to a hybrid or internal combustion engine vehicle either before or after market.
  • the design of the battery bay 108 is formed integrally with a frame of the vehicle 102.
  • Figure 4 is a perspective view of an embodiment of the battery pack 104.
  • the battery pack 104 has a height (h or H) substantially less than its length (L).
  • the battery 104 has a first portion 401 being substantially long and flat and a second portion 402 being shorter and thicker than the first portion, i.e. , the first portion 401 has a height (h) significantly less than the height (H) of the second portion 402.
  • the second portion 402 has a greater height (H) as it is configured to fit under or behind the rear passenger seats or in a portion of the trunk, and as such does not significantly impact the passenger space inside the electric vehicle.
  • the volume of the battery pack 104 is 200 to 300 liters.
  • the weight of the battery pack 104 is 200-300 kg.
  • the battery pack 104 is an at least partially sealed enclosure which is built to substantially enclose and absorb an explosion of battery cells/chemical modules (502, Fig 5 ) within the battery pack.
  • the sealed enclosure of the battery pack 104 is made of materials that are able to substantially withstand damage caused by dust, dirt, mud, water, ice, and the impact of small rigid objects. Suitable materials include some plastics, carbon fibers, metals, or polymers, etc.
  • an external cover on the battery pack 104 protects and insulates the internal components of the battery from harsh environmental conditions and penetration of moisture or fuel vapors.
  • a battery management system (BMS) 406 in the battery pack 104 manages the charging and the discharging cycles of the battery pack.
  • the BMS 406 communicates with the vehicle onboard computer to report on the battery's state of charge and to alert of any hazardous operating conditions.
  • the BMS 406 communicates with the battery charge station 132.
  • the BMS 406 can communicate with the vehicle onboard computer via a 9-pin connector. The number of pins in the connector varies depending on the connector design.
  • the BMS 406 is able to arm and disarm the electric power connector between the battery pack 104 and the vehicle 102 by cutting the current to the connector using a switching device located in the battery pack 104.
  • the BMS 406 handles substantially all aspects of battery safety issues during charging, operation and storage.
  • FIG. 5 is a perspective view of the battery pack 104 with the battery pack chemical modules 502 that receive, store, and discharge electric energy.
  • the modules 502 are housed within a battery pack housing 504. These chemical modules 502 are sometimes referred to herein as rechargeable battery cells 502.
  • a plurality of chemical modules 502 are disposed within the battery pack 104.
  • at least one chemical module 502 is used.
  • each chemical module 502 is rechargeable but there may be instances where a one time use emergency battery could be used.
  • the chemical modules 502 are re-charged as a group at either a charge station 132 or at a charging portion of a battery exchange station 134, based on parameters set and controlled by the BMS.
  • FIG. 6 is a perspective view of an embodiment wherein the battery pack 104 includes a cooling system which dissipates heat from the battery pack 104.
  • a portion of the battery pack's housing 504 includes a heat exchange mechanism with at least a portion thereof exposed to ambient air at the underside of the vehicle 102 when the battery pack 104 is attached to the vehicle.
  • the heat is conducted from the modules 502 to a heat exchanger or heat sink at the bottom section of the battery pack.
  • the cooling system includes-openings 404 in the external cover, which fluidly communicate with one or more cooling ducts 602 that direct ram air flow past the battery to further dissipate heat generated by the battery.
  • the cooling ducts 602 run the entire length of the battery pack 104 while in other embodiments the ducts take any appropriate path to best cool the modules 502. In some embodiments, the cooling ducts 602 direct air through heat exchangers which dissipate heat from the battery pack modules. In some embodiments, the cooling ducts 602 also include cooling fins 604 therein. In some embodiments, air cooling is accomplished by electric fans. In some embodiments, the inlet 404 comprises a scoop 606 for directing ram air through the ducts 602 while the vehicle is in motion. In some embodiments, the scoop 606 contains a mesh cover 608 for preventing debris from entering the cooling ducts 602.
  • FIG 7 is a perspective view of the battery pack 104 and battery bay frame as viewed from the underside of the battery pack.
  • the battery pack 104 includes another cooling system made up of dimples or cavities 702.
  • the dimples/cavities 702 are located in the bottom surface of the battery pack 104, which runs along the bottom of the vehicle, to be exposed to air passing over them when the vehicle 102 is in motion. Even when the vehicle is stopped, heat generated by the battery is dissipated due to its large surface area and shaded location on the underside of the vehicle.
  • the dimples/cavities 702 increase the overall surface area of the bottom of the battery pack, which further helps to cool the modules 502.
  • the increased surface area is sufficient for cooling, and ducts and/or heat exchangers are not necessary. In some embodiments, this increased surface area is used in conjunction with one or more of the previously described cooling mechanisms (such as the cooling ducts with fins described in Figure 6 , or the heat sink and heat exchanger also described above.)
  • battery pack cooling systems such as those described above in relation to Figures 6 and 7 , are capable of dissipating a majority of the heat generated during full power operation and/or during the charging process. In some embodiments, the cooling systems are capable of dissipating 3 KW of heat. The exact amount of heat emitted from the battery varies from one design to another. In some embodiments, the heat from the cooling systems described above is substantially emitted to the environment rather than to other parts of the vehicle 102.
  • Figure 7 also shows an embodiment with a plurality of pilot holes 704 on the underside of the battery pack 104. These pilot holes 704 mate with locating pins on an exchange device platform discussed in application No. 61/166,239 (filed April 2, 2009 , entitled Battery Exchange Station and incorporated herein) to help properly align the exchange device platform with the battery pack 104. In some embodiments, one pilot hole is present. In other embodiments, two or more pilot holes are present. The embodiment of Figure 7 shows pilot holes on either side of every striker on the battery. In some embodiments, the pilot holes 704 exist in the frame of the battery bay rather than the battery, and function substantially the same, i.e. , to facilitate proper alignment of the exchange platform during a battery exchange operation.
  • FIG 8 is a perspective view of another embodiment a battery pack 806.
  • the battery pack 806 has a first portion 401 being substantially long and flat; a second portion 402 being shorter and thicker than the first portion; and a third portion 403 of the battery pack 104 being long and thin and running substantially the length of the first portion 401 with a height larger than the first portion 401 but smaller than or equal to the height of the second portion 402.
  • the third portion 403 of the battery 104 protrudes in the Y-direction from the first portion 401 along a central axis in the X-direction formed between the driver and passenger seats, as shown.
  • Still other embodiments (not shown) have a substantially cuboid shape, without two differently shaped portions. Other embodiments may have more complex shapes. For example, some embodiments are taller than they are wide. Embodiments of this general shape are sometimes located behind a passenger space, rather than underneath it.
  • the battery pack 104 includes one or more pins 802 to align the battery 104 with the battery bay 108 of the vehicle 102.
  • the pins 802 may also be used to prevent the battery pack from being inserted in the battery bay 108 in the wrong direction.
  • the pins at the battery and corresponding openings in the battery bay may be keyed to one another.
  • the battery pack housing 504 further comprises bar shaped strikers 1924, which are firmly attached to the battery pack housing and configured to carry the entire weight of the battery pack 104, i.e., the battery pack can be suspended from the strikers 1924 when they are engaged with latches 1920 ( Figure 19A ) on the battery bay 108.
  • All versions of the battery pack 104 also contain an electrical connector 804 (discussed below in relation to Figure 9 ), for quickly and safely connecting and disconnecting the battery pack 104 to and from the vehicle 102.
  • the electrical connector 804 is located on the third portion 403 of the battery 104, but in other embodiments, it may be located anywhere on the pack.
  • FIG. 9 is a detailed perspective view of the electrical connection system 900. This figure shows both the battery electrical connector 804 as well as the corresponding battery bay electrical connector 902 which mate together to form the electrical connection system 900.
  • the battery electrical connector 804 is attached to the battery pack 104 by means of a base unit 916. Similar attachment mechanisms are used to attach the battery bay electrical connector 902 to the frame 118 of the battery bay 108 or to the electric vehicle 102 directly.
  • the electrical interface between the battery bay 108 and the battery pack 104 i.e. the connection between the bay electrical connector 902 and the battery pack electrical connector 804) allows for quick connect/disconnection between the pack and the bay or vehicle.
  • Both connectors also include electric shields 904 to shield the electromagnetic forces of the connections from interfering with the chemical modules/ battery cells 502.
  • the electric shield may be grounded.
  • the electric shield 904 also comprises an O-ring 913 to prevent moisture and debris from fouling the electrical connectors and causing electrical shorts and/or fires.
  • the alignment between the bay electrical connector 902 and the battery pack electrical connector 804 is facilitated by one or more tapered alignment pins 912 and corresponding alignment receptacles or sockets 914.
  • the alignment pins 912 are on the battery pack electrical connector 804 while the alignment sockets/receptacles 914 are on the bay electrical connector 902.
  • the arrangement is transposed.
  • the pins 912 are keyed to one another to prevent inappropriate mating of the electrical connectors.
  • the electric connections between the battery bay 108 and the battery pack 104 have two separate groups of connectors.
  • the first group of connectors is for power (approximately 400VDC, 200 Amp) to and from the battery pack 104.
  • the second group of connectors 910 is for data communications (5-12V, low current.)
  • the connector has 9 pins. In other embodiments the connector will have more or fewer pins than 9.
  • the first group of connectors includes a first pair of connectors 906 for power to the battery pack 104 from a charging mechanism.
  • the charging mechanism is a stand alone charging station 132 that connects to the vehicle 102 and charges the battery pack 104 while it is still coupled to the vehicle (as shown in Figure 1 ).
  • the charging mechanism is incorporated into a portion of the battery exchange station (134, Fig 1 ), where the depleted/discharged battery pack 104 that has been removed from a vehicle 102 is charged again before being inserted into a vehicle.
  • the first group of connectors also includes a second pair of connectors 908 to provide power from the battery pack 104 to the electric motor 103.
  • the battery electrical connector 804 as well as the corresponding battery bay electrical connector 902 mate together as a result of the translation of the battery pack 104 into the battery bay 108.
  • Both the battery electrical connector 804 as well as the corresponding battery bay electrical connector 902 have some flotation, i.e. , they can travel a few millimeters to the left and right.
  • the male connector battery bay electrical connector 902 in this embodiment
  • the male connector has alignment pins 912 which penetrate into sockets 914 in the female connector (the battery electrical connector 804 in this embodiment).
  • the flotation of the two parts of the electrical connection system 900 allows some misalignments (due to production and assembly tolerances) of the two connector parts.
  • the electrical connectors 906, 908, and 910 in the electrical connection system 900 align and connect themselves automatically only after the mechanical connections (i. e., the locking of the battery pack 104 into the battery bay 108 by means of the latch mechanisms 1016, 1018 in the transmission assembly 1000, described in Figures 10 and 19 ) have been established.
  • FIG 10 is a perspective top side view of one embodiment of the battery pack 104 connected to the battery bay 108.
  • the battery pack 104 and battery bay 108 are substantially cuboid/rectangular parallelepiped in shape.
  • This embodiment includes a battery electrical connector 1022 being on one side of the first portion 401.
  • the battery bay 108 includes a battery bay transmission assembly 1000.
  • the transmission assembly 1000 is a grouping of gears, rotating shafts, and associated parts that transmit power from a drive motor 1310 or alternatively from an external/manual rotation source (such as the wrench received within a drive socket 1308 shown in Figure 13 ).
  • the latch mechanisms 1016, 1018 as will be explained in detail below with regard to Figure 19 .
  • the transmission assembly 1000 includes a first gear set 1002 (such as a miter gear set) which drives a first gear shaft 1004 and a second gear shaft 1006 in opposite directions.
  • the rotational force about the Y-axis by the drive motor 1310 or manual rotation is translated by the first gear set 1002 into equal and opposite rotational forces of the gear shafts 1004, 1006 about the X-axis.
  • the first gear shaft 1004 is attached to a second gear set 1008 (such as a first worm gear set).
  • the second gear shaft 1006 is attached to a third gear set 1010 (such as a second worm gear set).
  • the second and third gear sets 1008, 1010 which are discussed in more detail below with respect to Figure 12 , connect each gear shaft 1004, 1006 to respective torque bars 1012, 1014 which permits the power flow to turn a corner around the battery bay.
  • the rotational force of the gear shaft 1004 about the X-axis is translated by the gear set 1008 into a rotational force of torque bar 1012 about the Z 1 -axis
  • the rotational force of gear shaft 1006 about the X-axis (in an equal and opposite direction to that of gear shaft 1004) is translated by gear set 1010 into a rotational force of torque bar 1014 about the Z 2 -axis (in an equal an opposite direction to the rotation of torque bar 1012.)
  • the transmission assembly 1000 drives the torque bars 1012, 1014 to substantially simultaneously rotate in equal but opposite directions.
  • the torque bars 1012, 1014 and gear shafts 1004, 1006 are at right angles to one another respectively. In some embodiments, the torque bars 1012, 1014 and gear shafts 1004, 1006 form an obtuse angle with each other, and in further embodiments they form an acute angle with one another.
  • second gear set 1008 connects the first gear shaft 1004 to the first torque bar 1012
  • the third gear set 1010 connects the second gear shaft 1006 to the second torque bar 1014.
  • the first gear shaft 1004 and the second gear shaft 1006 substantially simultaneously rotate in opposite directions causing the first torque bar 1012 and the second torque bar 1014 to substantially simultaneously rotate in opposite directions via the second gear set 1008 and third gear set 1010.
  • FIG. 10 shows two latch mechanisms 1016, 1018 attached to each torque bar 1012, 1014. These latches 1016, 1018 hold the battery pack 104 at least partially inside the battery bay 108 during normal operation of the vehicle.
  • Some embodiments include one or more first latches 1016 coupled to the first torque bar 1012 and one or more second/additional latches 1018 coupled to the second torque bar 1014.
  • the first torque bar 1012 is configured to actuate the first latch mechanism(s) 1016
  • the second torque bar 1014 is configured to actuate the second latch mechanism(s) 1018.
  • the torque bar ensures that the plurality of latches actuated and thus rotating substantially simultaneously with each other.
  • At least one latch lock mechanism 1020 prevents the latches 1016, 1018 from releasing the battery 104 from the battery bay 108 until the lock is disengaged as described in more detail in relation to Figure 20 .
  • only one latch lock mechanism 1020 is used, while in other embodiments at least one latch lock mechanism 1020 is attached to each torque bar 1012, 1014.
  • the latch lock 1020 is electronically activated, while in other embodiments it is mechanically activated.
  • the first torque bar 1012 is located at a side of the battery bay 108 nearest to the front end of the vehicle 102
  • the second torque bar 1014 is located at a side of the battery bay 108 nearest to the rear of the vehicle, or the arrangement may be transposed.
  • the gear sets and mechanisms of the transmission assembly may be located anywhere so long as the torque bars 1012, 1014 are driven in opposite directions simultaneously at the same angular velocity to actuate the latch mechanisms 1016, 1018.
  • FIG 11 is a perspective view of another embodiment of a battery bay 108.
  • This embodiment also includes a first gear set 1002 (such as miter gear set) that drives a first gear shaft 1004 and a second gear shaft 1006 in opposite directions.
  • the battery bay's frame is not rectangular in shape.
  • the second gear shaft 1006 is made up of three portions, a first gear shaft link 1102 connected by a first universal joint 1104 to a second gear shaft link 1106, and a third gear shaft link 1108 connected by a second universal joint 1110 to a third gear shaft link 1112.
  • the first gear shaft 1006 is bent to accommodate for other components of the electric vehicle 102.
  • the battery bay 108 cavity has a smaller volume than it would have were the first gear shaft 1006 a single straight component extending from the first gear set 1002.
  • Figure 11 also shows a lock synchronization bar 1112 in the transmission assembly 1000 which is located near each torque bar 1012 ( Figure 10 ), 1014.
  • Each lock synchronization bar 1112 is attached to a latch lock mechanism 1020 to keep its respective latch mechanisms 1016, 1018 from releasing, as will be explained in detail below with respect to Figure 20 .
  • Figure 11 also shows springs 1806 in the latch mechanisms 1016, 1018 8 which are located on either side of the latch 1920 as explained in more detail in Figure 18 .
  • the driving torque can be transmitted to the latches by using other types of drive components such as belts, pulleys, sprockets drive chains.
  • Figure 12 shows one embodiment of the second and third gear sets 1008, 1010.
  • the gear sets 1008, 1010 are each made up of a helical gear 1202 and a spur gear 1204.
  • the helical gear 1202 is a worm gear.
  • the rotation of the helical gear 1202 which is connected to the gear shafts 1004, 1006, rotates the corresponding torque bar 1012, 1014 by means of interlocking teeth on the helical gears 1210 and spur gear 1204.
  • the precise number and configuration of teeth on the helical gear 1210 and the spur gear 1204 varies depending on the particular electric vehicle 102.
  • the helical gear 1202 is significantly longer and has more threading, while in some embodiments, the spur gear 1204 gear has more teeth, or forms a complete circle. In other embodiments the diameter of the helical gear 1202 is larger than the proportions shown in Figure 12 .
  • the helical gear 1202 turns the spur gear 1204 in one direction to engage the latch mechanisms 1016, 1018 by which the battery 104 is lifted and locked into the battery bay 108, and the helical gear 1202 turns the spur gear 1204 in the opposite direction to disengage the latch mechanisms 1016, 1018 and allow the battery 104 to be removed from the battery bay 108.
  • Figure 13 shows a detailed view of one embodiment of the first gear set 1002.
  • the first gear set 1002 is a miter gear set.
  • the miter gear set 1002 comprises three helical bevel gears; including a central gear 1302 coupled to a first outer gear 1304 and a second outer gear 1306. As the central gear 1302 rotates it drives the first outer gear 1304 in a first rotational direction and the second outer gear 1306 in a second rotational direction opposite of the first rotational direction. The first outer gear 1304 drives the first gear shaft 1004, while the second outer gear 1306 drives the second gear shaft 1006.
  • the rotation of the central gear 1302 drives the first gear shaft 1004 in a first rotational direction by means of the first outer gear 1304 while simultaneously/synchronously driving the second gear shaft 1006 in a second rotational direction by means of the second outer gear 1306.
  • the first gear set 1002, specifically the central gear 1302 is driven by the rotation of a drive socket 1308 located at the underside of the electric vehicle 102.
  • the shaft is mechanically rotated, such as by an Allen or socket wrench 1314 configured to mate with the drive socket 1308.
  • the female drive socket 1308 has an unusual or non-standard shape such that it can only receive a particular shaped Allen or socket wrench 1314 made to mate with the non-standard shaped drive socket 1308.
  • the transmission assembly 1000 is driven by an electric drive motor 1310 through the drive motor gear ratio set 1312.
  • the gear ratio set 1312 drives the first gear set 1302, which drives the first gear shaft 1004 and the second gear shaft 1006 simultaneously in opposite directions to eventually simultaneously actuate the latch mechanisms 1016 , 1018 as described above with relation to Figure 10 .
  • the drive motor 1310 is used in most circumstances to rotate the shafts 1004, 1006, while the drive socket 1308 is only used for manual override situations.
  • the drive socket 1308 is the preferred means for driving the first gear set 1002.
  • the transmission assembly 1000 encompasses a second gear set 1008 which is a right worm gear set and third gear set 1010 which is a left worm gear set.
  • second gear set 1008 and the left worm gear set 1010 are used in the transmission assembly 1000, the first gear shaft 1004 and the second gear shaft 1006 need not be driven to rotate in opposite directions about the X-axis. Instead, the torque bar 1012 is driven about the Z 1 -axis and torque bar 1014 is driven about the Z 2 -axis (in an equal an opposite direction to the rotation of torque bar 1012) by means of the opposite threading on the right and left worm gears (1008, 1010).
  • the pitch of the threading on the right worm gear 1008 is opposite to the pitch of the threading on the left worm gear 1010.
  • the first gear set 1002 need not be a miter gear set as shown in Fig. 13 , but is instead a simpler gear set shown in Figure 23B .
  • the shafts 1004, 1006 can rotate the same direction, and a complex miter gear set is not needed at the point of actuation of the shafts 1004, 1006.
  • Figure 14 shows a bottom perspective view of another embodiment of the drive socket 1308 as viewed from the underside of the at least partially electric vehicle 102.
  • the drive socket 1308 is accessible through a hole in the battery pack housing 1400.
  • the drive socket 1308 is accessible at the side of the cavity 302 in the battery bay 108.
  • the first gear set 1002 is driven by the socket wrench 1314 only after a key 1602 has been inserted into a key hole 1402 and unlocks the first gear set 1002 as described in Figure 17 .
  • the key hole 1402 is also located at the underside of the electric vehicle 102 and requires a hole in the battery housing 1400. In other embodiments, the key hole 1402 is in the battery bay 108.
  • Figure 15 is a perspective view of one embodiment of a first gear lock 1502 (which in some embodiments is the miter gear lock).
  • first gear lock 1502 when a key is inserted into the key hole 1402, as depicted by the arrow in the figure, the first gear lock 1502 rotates upward and disengages from a small gear on the shaft 1004 and thus is unlocked. Then, the first gear set 1002 can then perform its function of rotating the central gear 1302, which drives the first gear shaft 1004 in a first rotational direction by means of the first outer gear 1304 while simultaneously driving the second gear shaft 1006 in a second rotational direction (opposite the first rotational direction) by means of the second outer gear 1306.
  • the first gear lock 1502 rotates downward and engages the small gear on the shaft 1004 and thus locks it.
  • the electric drive motor 1310 of the transmission assembly 1000 is located above the first gear set 1002, and as such does not require a drive motor gear set 1312 as described in Figure 13 .
  • Figure 16 is a perspective view of a second embodiment of the gear lock 1600.
  • the key 1602 is shown outside of the key hole 1402.
  • the key hole 1402 is located close to the drive socket 1308.
  • the key 1602 has a specific and unconventional shape for mechanically releasing the second embodiment of the gear lock 1600, explained in more detail below, while avoiding other components of the first gear set 1002.
  • Figure 17 is a detailed view of the key 1602 inserted into the key hole 1402 and releasing the first gear lock 1502.
  • the first gear lock 1502 is positioned in-between the motor 1310 and the gear set 1312.
  • the key 1602 unlocks the first gear lock 1502 by pushing a locking latch 1702 with a locking tooth 1704 away from a locking gear 1706.
  • the locking latch 1702 is designed to be biased into its locked position, i.e. , mated with the locking gear 106, as soon as the key 1602 is removed.
  • a spring 1708 is attached to the locking latch 1702 to provide the biasing force, while in other embodiments gravity or other mechanisms for biasing the locking latch 1702 may be used.
  • the key 1062 remains in the inserted position throughout the battery exchange process.
  • the key 1602 is only required to originally unlock the first gear lock 1502, but is not required to remain in place throughout the battery exchange process.
  • the first gear set 1002 is kept from rotating until the key 1602 unlocks the gear lock 1502.
  • the shafts 1004, 1006, torque bars 1012, 1014, and their corresponding latch mechanisms 1016, 1018 will not turn unless the gear lock 1502 has been unlocked.
  • a latch lock mechanism 1020 (described in relation to Figure 20 ) must also be unlocked before the process to actuate the latch mechanisms 1016, 1018 can begin.
  • the latch lock mechanism and the gear lock 1502 are independent of one another, and are individually/independently released before the transmission assembly 1000 can be actuated.
  • the latch lock mechanism 1020 is electrically actuated, and the gear lock 1502 is mechanically activated or vice versa. Activating the two different locks by two separate mechanisms (mechanical and electrical) prevents unauthorized or inadvertent removal of the battery pack 104 from the vehicle 102. Furthermore, in some embodiments, all of the locks are equipped with indicators which indicate possible failure before, during, or after the battery exchange process.
  • An actuator located on board the vehicle 102 actuates one or both of the above described locks.
  • the actuator is operated by a single 5V 15 mA digital signal, which is sent from an onboard computer system on the vehicle.
  • the actuator is protected against excessive power flow by indicators.
  • other types of mechanical or electro-mechanical actuators may be used to remove the safety locks.
  • Figure 18 shows a battery bay 108 with several alignment sockets/holes 1802 configured to receive tapered alignment pins 802 disposed on the battery 104.
  • This figure shows an embodiment with two alignment sockets 1802 and alignment pins 802, but in some embodiments, only one alignment socket 1802 and pin 802 are used.
  • the aligned pins 802 and the alignment holes have keyed shapes different from one another to prevent backwards or incorrect alignment of the battery pack 104 with the battery bay 108.
  • at least one compression spring 1806 is mounted to the battery bay 108.
  • the compression springs 1806 are configured to generate a force between the frame 118 battery bay 108 and the battery pack 104 when the battery pack 104 is held and locked at least partially within the cavity 302 of the battery bay 108.
  • the springs 1806 absorb vertical motion (Y-axis motion) of the battery pack 104 and bay 108 during driving or other operations.
  • the compression springs 1806 help maintain the latches 1920 in contact with the strikers 1924 on the battery locked position, and also help expel the battery 104 from the battery bay 108 when the locks are unlocked.
  • Figure 18 shows compression springs 1806 on either side of each latch 1920.
  • Matching compression springs 1806 on either side of the latches balance each other such that the resulting force on the battery is substantially in a vertical (Y-axis) direction only.
  • Other embodiments use greater or fewer compression springs 1806.
  • other types of flexible mechanical parts are used to preload the latches. For example, rubber seals are used instead of the springs 1806.
  • Figure 18 shows an embodiment having three strikers 1924.
  • the strikers in Figure 18 are not bar shaped, as they are shown in other figures, but instead are rounded cut away portions in the frame 118 of the battery pack 104 itself. Other embodiments employ non-bar shaped strikers as well.
  • the strikers have different forms.
  • the strikers contain low friction solutions. Examples of low friction solutions include but are not limited to roller bearings or low friction coatings, as shown in Figure 19A , element 1930.
  • FIG 19A shows one embodiment of a latch mechanism 1016, 1018 used by the battery bay transmission assembly 1000.
  • the latch mechanism 1016, 1018 is a four bar linkage mechanism.
  • the latch mechanism 1016, 1018 comprises a latch housing 1902 which is rigidly attached to the frame of the battery bay. It also comprises a cam shaped input link 1904 rigidly coupled to a respective torque bar at first a pivot point 1906 such that the input link 1904 rotates/pivots together with a torque bar 1012, 1014 around the first pivot point 1906 with respect to the stationary latch housing 1902.
  • the end of the input link 1904 remote from the torque bar is rotatably coupled at second pivot point 1908 to a first rod end 1912 of a coupler link rod 1910.
  • the coupler link rod 1910 has a second rod end 1914 remote from the first rod end 1912 that is pivotably coupled to a latch 1920 at a third pivot point 1918.
  • the coupler link rod 1910 is a turnbuckle which includes an adjustment bolt 1916 configured to adjust the length of the coupler link rod 1910.
  • the latch 1920 has a fourth pivot point 1922 pivotably connected to another portion of the latch housing 1902. The latch 1920 pivots about an axis, running through the center of the fourth pivot point 1922. In some embodiments, the axis about which the latch pivots at the fourth pivot point 1922 is parallel but distinct from the axis about which the torque bar 1012, 1014 rotates at the first pivot point 1906.
  • the latch is substantially “V” or hook shaped with the third pivot point 1918 at the apex of the "V.”
  • the fourth pivot point 1922 is at an end of the "V” remote from the apex (this end shall be called herein the latch's proximate end 1926).
  • the other end of the "V,” is also remote from the apex of the "V” (this other end shall be called the latch's distal end 1928).
  • the distal end 1928 of the latch is configured to engage the bar shaped striker 1924 on the battery pack 104.
  • the distal end 1928 of the latch 1920 has a hook shape, as shown in Figure 19A , which is configured to cradle the striker 1924 when engaged with the striker (as shown in Figure 19C ).
  • the hook shaped distal end 1928 is also useful in engaging and lifting the battery pack 104, at least partially, into the cavity of the battery bay 108 ( Figure 3 ) when engaging/receiving the battery.
  • the striker 1924 may have a low friction element such as a roller bearings or low friction coating 1930.
  • the latch 1920 when the input link 1904 is in a released position, the latch 1920 is configured to mechanically disengage from a corresponding striker 1924 on the battery pack 104. In other words, when the input link 1904 is in a released position, the latch 1920 does not contact the striker 1924.
  • the input link 1904 is driven/rotated, by means of the torque bar 1012, 1014 connected to it.
  • Figure 19B shows an intermediate position where the input link 1904 has rotated such that the latch 1920 begins to engage the striker 1924 on the battery pack 104 and begins lifting the battery pack 104, at least slightly into the cavity of the battery bay 108 ( Figure 3 ).
  • the input link 1904 and coupler link rod 1910 are in a geometric lock they prevent the battery 104 from being released from the battery bay 108, such as while the vehicle 102 is driving. Furthermore, in the geometric lock position, only minimal loads are transferred from the battery pack 104 to the drive components of the vehicle 102.
  • (a) releasing and (b) engaging are done as follows.
  • the (a) releasing a battery pack 104 from the battery bay 108 is performed by means of the transmission assembly 1000 by rotating the latch(s) 1920 on the battery bay 108 to disengage the striker(s) 1924 on the battery pack 104, and (b) engaging a new battery pack 104 in the battery bay 108 is done by means of the transmission assembly 1000 rotating the latch(s) 1920 on the battery bay 108 to engage, lift, and lock the striker(s) 1924 on the battery pack 104.
  • the (a) releasing occurs in less than one minute.
  • the (b) engaging happened in less than one minute.
  • both the (a) releasing of the first battery pack 104 from the battery bay 108 and the (b) engaging of a second battery pack 104 in the battery bay 108 occur in less than one minute.
  • a latch position indicator is utilized to measure whether the latch 1920 is in an engaged or disengaged position.
  • the latch position indicator communicates the position of the latch 1920 to a computer system in the electric vehicle 102.
  • other indicators are used throughout the battery pack 104 and battery bay 108 to verify the workings of any or all of the following elements: the first gear lock 1502, the latch lock mechanism 1020, the latch mechanism 1016, 1018, the miter gear set 1002, the torque bars 1010, 1012, the gear shafts 1004, 1006, the electrical connector 804, and the position of the battery pack 104 inside the battery bay 108.
  • the indicators include switches, Hall sensors, and/or micro-switches.
  • the alignment devices such as alignment pins 802 and latch mechanisms 1016, 1018) and position indicators allow the battery pack 104 to be precisely monitored and positioned inside the battery bay 108 in six different degrees of freedom (3 degrees of translation and 3 degrees of rotation.)
  • the battery bay have some or all of the following internal electric indications: a ) proper/improper connection of the electrical connectors between the battery bay and the battery pack; b ) open/close indication on each of the individual latches which fasten the battery pack to the battery bay; c) open/close indication on each of the safety lock devices; d ) existence/non existence of the unique key like device which is mentioned in section 14; e) in-position/out-of-position of battery pack inside the battery bay in at least three different locations around the battery pack; f ) excessive/in-excessive temperature measurement in two different locations within the battery bay. (Excessive temperature may be a temperature above 90° C); and g) excessive/in-excessive power limits in the quick release actuator.
  • Figure 20 is a detailed view of the latch lock mechanism 1020.
  • the latch lock mechanism 1020 is configured to prevent the latch mechanism 1016, 1018 from rotating when engaged.
  • the latch lock mechanism 1020 comprises a toothed cantilevered lock arm (2002) (also called a lock bolt) configured to engage a corresponding tooth 2010 on the latch 1920.
  • the toothed cantilevered lock arm 2002 is configured to prevent the latch 1920 from rotating when engaged.
  • the toothed cantilevered lock arm 2002 is coupled to a lock synchronization bar 2004, which is configured to disengage the toothed cantilevered lock arm 2002 when rotated.
  • the lock synchronization bar 2004 is also coupled to a lock actuator 2006, which is configured to rotate the synchronization bar 2004.
  • the lock actuator 2006 includes an electric motor 2008 that rotates the lock synchronization bar 2004 via a gear set or any other suitable mechanism.
  • the electric motor 2008 is activated by an electric lock or unlock signal.
  • latch lock mechanism is mechanically activated.
  • both electrical and mechanical activation is provided, the mechanical activation being useful if any electronic malfunctions occur.
  • the latch lock mechanism 1020 is configured to disengage only after the gear lock 1502 (shown in Figure 15 ) has been released.
  • the lock synchronization bar 2004 is configured to rotate one or more latch locks 2002 in a first direction so that the one or more latch locks 1920 engage with the latch 1920.
  • the lock synchronization bar 2004 is also configured to rotate the one or more latch locks 2002 in a second, opposite, direction to disengage the latch locks 2002 from the latch 1920. As such, after the latch locks have been rotated in a second direction, to unlock the latch 1920, the latch is allowed to disengage the striker 1924 by means of the torque bar 1012, 1014 rotation through the four bar linkage latch mechanism 1016, 1018 described above.
  • the miter gear set 1002 driven by the electric drive motor 1310, causes the latches 1016, 1018 to rotate opposite one another.
  • the latches 1016, 1018 on either side of the battery bay 108 rotate away from each other, they release the corresponding strikers 1924 on the battery 104.
  • Figure 21 is a flow diagram of a process for releasing a battery pack from a battery bay.
  • the release process happens as follows.
  • a first latch mechanism, the miter gear lock 1502 is which physically released (2102).
  • the physical release happens by means of a key 1602 inserted into the key hole 1402 (2104).
  • a second latch mechanism, the latch lock mechanism 1020 releases the one or more latches 1016, 1018 (2106).
  • the latch lock unlocks when an electric motor 2008, activated by an electronic unlock signal, actuates the lock actuator 2006 which rotates the latch lock 2002 and disengage its tooth from the tooth of the latch 1920 by rotating the lock synchronization bar 2004 (2108).
  • the drive motor 1310 actuates a transmission assembly (2110).
  • the transmission assembly is actuated as follows, the drive motor 1310 rotates the miter gear set, which rotates the gear shafts, which rotate the worm gears, which rotate the torque bars (2112).
  • the drive motor rotates the central gear 1302 of the miter gear set 1002 by means of a gear ratio set 1312. As the central gear 1302 rotates it drives the first outer gear 1304 in a first rotational direction and the second outer gear 1306 in a second rotational direction opposite of the first rotational direction.
  • the first outer gear 1304 drives the first gear shaft 1004 in a first rotational direction
  • the second outer gear 1306 drives the second gear shaft 1006 in a second rotational direction.
  • the first gear shaft 1004 rotates the first torque bar 1012 by means of the first worm gear set 1008.
  • the second gear shaft 1006 rotates the second torque bar 1014 in a direction opposite that of the first torque bar 1012 by means of the second worm gear set 1010.
  • the rotation of the first torque bar 1012 then causes at least one latch 1920 to rotate and disengage a striker 1924 on the battery 104 (2114).
  • the first torque bar 1012 being coupled to the input link 1904, rotates the input link 1904, which actuates the coupler link rod 1910 such that the latch 1920 disengages the striker 1924.
  • the rotation of the second torque bar 1014 causes the latch mechanism 1018 coupled to the second torque bar 1014 to rotate in a direction opposite that of the latch mechanism 1016 coupled to the first torque bar 1012.
  • latches on either side of the battery bay 108 rotate away from one another to release their respective strikers 1924.
  • the battery pack is translated vertically downward away from the underside of the vehicle.
  • the battery pack is translated by means of first being lowered onto a platform under the battery and then being further lowered by means of the platform lowering.
  • Figure 22 is a flow diagram of a process for engaging a battery pack to a battery bay.
  • the drive motor 1310 actuates a transmission assembly (2202).
  • the transmission assembly is actuated as follows, the drive motor 1310 rotates the miter gear set, which rotates the gear shafts, which rotate the worm gears, which rotate the torque bars (2204).
  • the drive motor 1310 rotates the central gear 1302 of the miter gear set 1002 in the opposite direction as that used for disengaging a battery 104 by means of a gear ratio set 1312.
  • the central gear 1302 As the central gear 1302 rotates, it drives the first outer gear 1304 one rotational direction and the second outer gear 1306 in the opposite direction.
  • the first outer gear 1304 drives the first gear shaft 1004 in one direction, while the second outer gear 1306 drives the second gear shaft 1006 in the opposite direction.
  • the first gear shaft 1004 rotates the first torque bar 1012 by means of the first worm gear set 1008.
  • the second gear shaft 1006 rotates the second torque bar 1014 in a direction opposite that of the first torque bar 1012 by means of the second worm gear set 1010.
  • the rotation of the first torque bar 1012 then causes at least one first latch 1920 to rotate and engage a striker 1924 on the battery 104 (2206).
  • the first torque bar 1012 being coupled to the input link 1904, rotates the input link 1904, which actuates the coupler link rod 1910 such that the latch 1920 engages the striker 1924.
  • the first latch is located at the front end of the underside of the vehicle. In some embodiments, substantially simultaneously a second latch located at the back end of the electronic vehicle is also rotated in the same manner (2208).
  • the strikers Once the strikers are engage, they then vertically lift the battery at least partially into the battery bay of the electronic vehicle (2210).
  • the lifting happens as follows, substantially simultaneously, the rotation of the second torque bar 1014 causes the latch mechanism 1018 coupled to the second torque bar 1014 to rotate in a direction opposite that of the latch mechanism 1016 coupled to the first torque bar 1012.
  • latches on either side of the battery bay 108 rotate towards one another to engage their respective strikers 1924 substantially simultaneously and lift them.
  • the battery is secured into the battery bay 108 (2212).
  • the latches 1920 hook onto the strikers 1924 and lift the battery until the latches are in their geometric lock (dead center) positions.
  • the first lock mechanism is engaged.
  • the key 1602 is removed from the key hole 1401 and the locking latch 1702 with a locking tooth 1704 engages with the locking gear 1706 (2216).
  • the second lock mechanism is electrically engaged (2218).
  • the an electric motor 2008 activated by an electronic unlock signal, actuates the lock actuator 2006 which rotates the latch lock 2002 and engages its tooth with the tooth of the latch 1920 by rotating the lock synchronization bar 2004 (2220).
  • the battery bay 108 is configured to be disposed at the underside of the at least partially electric vehicle 102 such that the releasing and engaging mechanisms described can release an at least partially spent battery 104 and have it replaced by an at least partially charged battery 104 underneath the vehicle 102.
  • the first latch mechanism 1016 and the second latch mechanism 1018 substantially simultaneously rotate in opposite directions about their respective axes.
  • the at least two latches rotate towards one another to engage, lift, and lock the battery 104 at least partially within the cavity of the battery bay 108.
  • the at least two latches then rotate away from each other to disengage the battery 104.
  • the battery pack 104 is disengaged and unlocked from the at least partially electric vehicle 102 when the latches 1920 of the first latch mechanism 1016 and the second latch mechanism 1018 substantially simultaneously rotate away from one another.
  • Figures 24A-31 illustrate various embodiments of an electrical connection system that provide additional detail to what was described above with relation to Figure 9.
  • Figure 9 illustrated one embodiment of an electrical connection system 900 comprising a battery electrical connector 804 connected to the battery pack 104 that was configured to mate with a battery bay electrical connector 902 connected to the electric vehicle 102.
  • Figures 24A-30B illustrates an electrical connection system 2400. These embodiments utilize the term vehicle-side connector 2402 to describe other embodiments of the element referred to as the battery bay electrical connector 902 in Figure 9 , and utilize the term battery-side connector 2452 to describe other embodiments of the element referred to as the battery electrical connector 804 in Figure 9 . It should be noted that in some instances these embodiments include additional components.
  • the shielding mechanism 2902 described in relation to Figures 30 and 31 is an additional element that performs a different shielding function than the electric shields 904 described in relation to Figure 9 .
  • the power connectors 906 and 908 and data connectors 910 of Figure 9 are described in greater detail with relation to Figures 24A-27 and are thus referred to by new names and numbers.
  • Figure 24A is a top perspective view of an electrical connection system 2400, including a vehicle-side connector 2402 and a battery-side connector 2452.
  • Figure 24B is a bottom perspective view of the vehicle-side connector 2402.
  • the battery-side connector 2452 is attached to the battery pack 104 and electrically connects the battery pack 104 to the vehicle 102 by mating with the vehicle-side connector 2402.
  • the battery-side connector 2452 has mechanisms for compensating for misalignment as described in detail below.
  • the vehicle-side connector 2402 is attached to the vehicle 102 and electrically connects the vehicle 102 to the battery pack 104 by mating with the battery-side connector 2452.
  • the vehicle-side connector 2402 has mechanisms for compensating for misalignment as described in detail below. It should be noted that while the components described in relation to the figures below are described as being “battery-side” or “vehicle-side,” these components could be swapped. In other words, all comments described as “battery-side” in embodiments illustrated below, could be mounted to the "vehicle” in an alternative embodiment, and vice versa.
  • the battery-side connector 2452 comprises a battery-side mounting portion 2454 and a battery-side coupling portion 2456.
  • the battery-side coupling portion 2456 includes one or more alignment sockets 2470.
  • one or more bolts 2462 which are surrounded by sleeves 2464, secure the battery-side coupling portion 2456 to the battery-side mounting portion 2454.
  • the battery-side coupling portion 2456 and the battery-side mounting portion 2454 are rigidly secured to one another, such that both components are fixed with respect to the battery pack.
  • the battery-side connector 2452 also comprises a battery-side coupler 2458 (shown and described in detail with respect to Figure 27 ) which allows for relative motion between the battery-side coupling portion 2456 and the battery-side mounting portion 2454. This relative motion between the components relieves potential misalignment between the battery-side connector 2452 and the vehicle-side connector 2402.
  • the battery-side coupling portion 2456 houses a battery-side power interface 2466 with one or more power sockets 2486 and a battery-side data interface 2468 with one or more data sockets 2488.
  • the battery-side coupling portion 2456 also includes a sealing mechanism 2472 surrounding a portion of the battery-side coupling portion 2456 including the battery side power interface 2466 and the battery-side data interface 2468 and which assists in protecting these components from dirt and debris.
  • the vehicle-side connector 2402 has a vehicle-side mounting portion 2404, a vehicle-side coupling portion 2406, and a vehicle-side coupler 2408.
  • the vehicle-side coupling portion 2406 is connected to the vehicle-side mounting portion 2404 via the vehicle-side coupler 2408.
  • the vehicle-side coupler 2408 is designed to allow relative motion between the vehicle-side coupling portion 2406 and the vehicle-side mounting portion 2404 to relieve potential misalignment between the battery-side connector 2452 and the vehicle-side connector 2402 and to absorb relative motion between the battery and vehicle.
  • the vehicle-side connector 2402 also has one or more alignment pins 2420.
  • Figure 24B is a bottom perspective view of the vehicle-side connector 2402.
  • the vehicle-side coupling portion 2406 houses a vehicle-side power interface 2416 with one or more power pins 2476 and a vehicle-side data interface 2418 with one or more data pins 2478.
  • the vehicle-side coupling portion 2406 connects to the battery-side coupling portion 2456 ( Figure 24A ) to electrically connect the battery pack 104 to the vehicle 102.
  • the vehicle-side coupler 2408 comprises one or more bolts 2412 and coil springs 2414.
  • the vehicle-side coupler 2408 uses a combination of bolts 2412 and the coil springs 2414 to allow relative motion between the vehicle-side coupling portion 2406 and the vehicle-side mounting portion 2404, as described in further detail below in relation to Figure 26 .
  • the vehicle-side mounting portion 2404 used to mount the vehicle-side connector 2402 to the vehicle 102 is shaped to conform to the specific contours of the underside of the vehicle 102.
  • the vehicle-side mounting portion 2404 is attached directly to the underside of a vehicle, while in other embodiments the vehicle-side mounting portion 2404 is attached to any portion of the vehicle that facilitates the coupling between the vehicle-side connector 2402 and a battery-side connector 2452 of the connection system 2400.
  • the vehicle-side mounting portion 2402 is any suitable plate, bracket, or other mounting mechanism that is configured to attach to the vehicle 102.
  • the vehicle-side mounting portion 2404 forms a part of the vehicle 102.
  • the battery-side mounting portion 2454 is configured to attach to or form a part of the battery 104 in a similar manner as described above for the vehicle-side mounting portion 2404.
  • Figure 24A also shows the sealing mechanism 2472 surrounding a portion of the battery-side coupling portion 2456.
  • the sealing mechanism 2472 is disposed between two proximate surfaces of the vehicle-side coupling portion 2406 and the battery-side coupling portion 2456.
  • the sealing mechanism 2472 is designed to prevent the ingress of environmental contaminants to the area between the coupling portions that contains the power 2416, 2466 and data interfaces 2418, 2468. Because of the extreme environments in which vehicles often operate, the sealing mechanism 2472 is designed to protect the most sensitive elements of the connector from contaminants such as water, dust, dirt, soot, chemicals, etc .
  • the sealing mechanism 2472 is a rubber O-ring.
  • the coupling portions 2406 and 2456 utilize more than one sealing mechanism.
  • the connection system 2400 employs additional types or combinations of sealing mechanisms including other types of gaskets or scraping mechanisms designed to clean away foreign contaminants.
  • one or more tapered alignment pins 2420 are mounted to the vehicle-side coupling portion 2406.
  • the tapered alignment pins 2420 are perpendicular to the surface of the vehicle-side coupling portion 2406 (the X-Z plane of Figure 3A ) and parallel to the axis along which the coupling portions 2406 and 2456 are connected together (the Y-axis of Figure 3A ).
  • the one or more alignment sockets 2470 mounted to the battery-side coupling portion 2456 are configured to receive the tapered alignment pin 2420.
  • the inside edges of the openings in the alignment sockets 2470 are chamfered in order to reduce friction and provide a smoother contact interface between the alignment pins 2420 and the alignment sockets 2470.
  • the alignment pins 2420 and alignment sockets 2470 are mounted such that when the alignment pins 2420 are in the alignment sockets 2470, the coupling portions 2406 and 2456 and their respective power interfaces 2416, 2466 and data 2418, 2468 interfaces are aligned.
  • Figure 26 illustrates the alignment pins 2420 in further detail.
  • the one or more alignment sockets 2470 each have a substantially cylindrical shaped cross-section.
  • one of the alignment sockets 2470 has an oval shaped cross-section rather than a cylindrical shaped cross-section.
  • the oval shaped alignment socket 2470 is mounted such that the long dimension of the oval is parallel to a line formed between two tapered alignment pins 2420.
  • the extra space between the alignment pin 2420 and the inside walls of the alignment socket channel accommodates alignment pins 2420 that may not be exactly parallel. This reduces possible mechanical stresses on the alignment pins 2420 and alignment sockets 2470.
  • the alignment pins 2420 and alignment sockets 2470 are more robust and durable than the connection elements that are utilized in the power interfaces 2416, 2466 and data 2418, 2468 interfaces.
  • an alignment mechanism such as the illustrated alignment pins 2420 and alignment sockets 2470, the lateral and bending loads that might otherwise be imparted to the electrical interfaces due to misalignments between the battery 104 and the vehicle 102 can be borne by structural components rather than the more fragile electrical and data components.
  • the vehicle-side coupling portion 2406 houses the vehicle-side power interface 2416 and the vehicle-side data interface 2418.
  • the battery-side coupling portion 2456 houses a battery-side power interface 2466 and a battery-side data interface 2468.
  • the vehicle-side power interface 2416 when coupled to the battery-side power interface 2466, transmits high voltage and current electrical energy between the battery 104 and the vehicle 102.
  • electric vehicles may require up to 1000 volts and up to 1000 amps of direct current electricity.
  • the vehicle requires up to 400 volts and 200 amps of direct current electricity.
  • the high voltage electricity is between about 100 and 1000 VDC.
  • the high voltage electricity is between about 200 and 800 VDC. In yet other embodiments, the high voltage electricity is between about 300 and 700 VDC. In still other embodiments, the high voltage electricity is between about 350 and 450 VDC.
  • the particular voltage and current capacities of the vehicle-side power interfaces 2416, 2466 will vary depending on the particular energy needs of the application. For instance, high performance vehicles may require a higher voltage or current carrying capacity than standard vehicles.
  • the vehicle-side power interface 2416 of the vehicle coupling portion 2406 uses conductive pins that are received by the power interface 2466 in the battery-side coupling portion 2456.
  • the vehicle-side power interface 2416 comprises two conductive power pins 2476.
  • the vehicle-side power interface 2416 comprises four or more conductive power pins 2476.
  • the inside surface of the battery side power interface 2466 is conductive in order to facilitate the transmission of electricity between the battery 104 and the vehicle 102.
  • the battery-side power interface 2466 employs power sockets 2486 that utilize a conductive mesh sleeve to make electrical contact with the power pins 2476, as described with reference to Figure 28 .
  • the battery-side power interface 2466 includes as many power sockets 2486 as there are power pins 2476.
  • the vehicle-side data interface 2418 contains seventeen conductive data pins 2478. In some embodiments, the vehicle-side data interface 2418 has nine, fifteen, or twenty data pins 2478. In some embodiments, the battery-side data interface 2468 will utilize as many data sockets 2488 as there are data pins 2478 in the data interface 2418. In some embodiments, the vehicle-side data interface 2418 employs data sockets 2488 that utilize a conductive mesh sleeve to make electrical contact with the data pins 2478, as described with reference to Figure 28 . The data interfaces 2418 and 2468 transmit data between the battery 104 and the vehicle 102 using electronic communication signals.
  • data interfaces 2418 and 2468 can support many communication protocols, including but not limited to TCP/IP, CAN-bus (Controller Area Network), or other proprietary protocols.
  • the data interfaces 2418 and 2468 are optical connectors. In such embodiments, the data interfaces 2418 and 2468 do not require conductive pins or sockets in order to transmit data between the battery 104 and the vehicle 102.
  • Figure 25 is an elevation view of the vehicle-side connector 2402 and the battery-side connector 2452.
  • Line 26-26 in Figure 25 defines the sectional views shown in Figures 26 and 27 .
  • Figure 26 is a sectional view of the vehicle-side connector 2402 along axis 26-26 shown in Figure 25 .
  • Figure 26 shows a more detailed view of the vehicle-side coupling portion 2406 of this embodiment.
  • the vehicle-side coupler 2408 comprises bolts 2412 that are attached to the vehicle-side mounting portion 2404 and the vehicle-side coupling portion 2406, and are surrounded by the coil springs 2414.
  • the bolts 2412 pass through holes 2602 in the vehicle-side coupling portion 2406 that are larger than the diameter of the shafts of the bolts 2412.
  • the coil springs 2414 are positioned between the vehicle-side mounting portion 2404 and the vehicle-side coupling portion 2406.
  • the coil springs 2414 are flexible and provide a resilient force between the vehicle-side mounting portion 2404 and the vehicle-side coupling portion 2406. This resilience provides a centering force between the vehicle-side coupling portion 2406 and the vehicle-side mounting portion 2404 to keep the vehicle-side coupling portion 2406 in a neutral position when the connectors 2402, 2452 are not coupled together. Additionally, the resilient structure of the coil springs 2414 allows the vehicle-side coupling portion 2406 to move both vertically and horizontally to aid in the alignment of the vehicle-side and battery-side coupling portions, 2406 and 2456. The coil springs 2414 also absorb vertical and horizontal shock and vibration when the vehicle 102 is driven.
  • the bolt and spring style vehicle-side coupler 2408 provides sufficient free play in the horizontal plan (the X-Z plane defined in Figure 3A ) to allow the vehicle-side connector 2402 and the battery-side coupler 2452 to align given the general geometrical tolerances of the complete battery bay assembly. In other words, if the total accuracy of the battery bay system is high, less free play in the vehicle-side coupler 2408 is required. For example, a free play of +/-3 mm will be enough. For lower accuracy battery bay systems, will require more free play.
  • the bolt and spring style vehicle-side coupler 2408 allows +/- 6 mm movement in a plane that is substantially parallel to the vehicle 102 (the X-Z plane defined in Figure 3A ). In some embodiments, the bolt and spring style vehicle-side coupler 2408 allows for +/- 6 mm movement along a vertical axis (the Y-axis defined in Figure 3A .)
  • the coil springs 2414 do not surround the bolts 2412, but are positioned elsewhere between the vehicle-side coupling portion 2406 and the vehicle-side mounting portion 2404.
  • the vehicle-side coupler 2408 utilizes a resilient mechanism other than coil springs, including but not limited to leaf springs, elastomer springs, or torsion springs.
  • the vehicle-side coupler 2408 utilizes more or fewer coil springs and bolts. Those skilled in the art will recognize that a variety of springs and configurations may be used.
  • Figure 26 shows the tapered alignment pin 2420 and its mounting mechanism in greater detail.
  • the one or more tapered alignment pins 2420 are rigidly fixed to the vehicle-side coupling portion 2406.
  • the one or more tapered alignment pins 2420 are attached as shown in Figure 26 , so as to allow relative motion between the alignment pins 2420 and the vehicle-side coupling portion 2406.
  • the vehicle side coupler 2408 comprises the floating pin mechanism as well as the bolt and spring mechanism described above.
  • the mount for the alignment pin 2420 uses a hollow flanged sleeve 2604 with an "I-shaped" cross-section between the pin 2420 and the vehicle-side coupling portion 2406.
  • the flanged sleeve 2604 is made up of two sleeves, each having a single flange or shoulder, to facilitate assembly.
  • the shoulders, or flanges, of the flanged sleeve 2604 rest on the surface of the vehicle-side coupling portion 2406, and are wider than the opening of the hole 2608 in the vehicle-side coupling portion 2406.
  • the flanges thus keep the tapered alignment pins 2420 captive to the surface of the coupling portion 2406 in the vertical direction.
  • the outside cylindrical surface of the flanged sleeve 2604 is smaller than the inside diameter of the hole 2608, leaving free space 2606 between the two surfaces.
  • the free space 2606 allows the alignment pin to have some lateral play or to "float" in the plane defmed by the surface of the vehicle-side coupling portion 2406 to which the alignment pin 2420 is mounted.
  • the floating pin style vehicle-side coupler 2408 allows +/- 1 mm movement in a plane that is substantially parallel to the vehicle 102 (the X-Z plane defined in Figure 3A ).
  • FIG 27 is a sectional view of the battery-side connector 2452 along axis 26-26 shown in Figure 25 .
  • the battery-side connector 2452 including the battery-side mounting portion 2454, a battery-side coupling portion 2456, and a battery-side coupler 2458 is shown.
  • the bolts 2462 which form a part of the battery-side coupler 2458, secure the battery-side coupling portion 2456 to the battery-side mounting portion 2454.
  • the shafts of the bolts 2462 are surrounded by flanged sleeves 2464.
  • the flanged sleeves 2464 have two shoulders, or flanges, creating a hollow "I-shaped" cross-section.
  • the flanged sleeves 2464 are made up of two sleeves (as shown), each having a single flange or shoulder, to facilitate assembly.
  • the shoulders of the flanged sleeves 2464 have a diameter larger than the opening in the battery-side coupling portion 2456 in which the sleeves 2464 sit.
  • the shoulders of the sleeves contact the top and bottom surface of the battery-side coupling portion 2456, thus keeping the battery-side coupling portion 2456 captive to the battery-side mounting portion 2454 (in the vertical direction).
  • the outer cylindrical surfaces of the sleeves 2464 have a diameter smaller than the openings in the battery-side coupling portion 2456.
  • This configuration leaves space 2702 between the wall of the hole in the battery-side coupling portion 2456 and the cylindrical surface of the sleeve 2464.
  • the space 2702 allows the battery-side coupling portion 2456 to move laterally relative to the battery-side mounting portion 2454.
  • the space 2702 permits the battery-side coupling portion 2456 to slide or "float" freely in one plane.
  • the sliding sleeve style battery-side coupler 2458 allows +/- 1 mm movement in a plane that is substantially parallel to the vehicle 102 (the X-Z plane defined in Figure 3A ). In other embodiments, planar motion will change based on the particular mounting location of the connection system 2400 and its elements.
  • Figure 28 shows an example of a mesh sleeve 2800 utilized by either the power sockets 2486, the data sockets 2488, or both power and data sockets in the battery-side coupling portion interface 2456.
  • the conductive surface of the mesh sleeve is made up of a number of conductive wires 2802 positioned between two rings 2804.
  • the wires 2802 are attached to the rings 2804 diagonally with respect to the axis formed by the center of the rings 2804. This configuration of wires 2802 and rings 2804 together form a semi-spiral shaped conductive mesh sleeve 2800.
  • the semi-spiral configuration disposes the sleeve 2800 with a narrowing bias, creating a gradual decrease in the internal diameter of the sleeve 2800 with the middle internal diameter 2806 being the smallest.
  • a corresponding pin (such as a power pin 2476 or a data pin 2478 from the vehicle-side coupling portion 2406) has a diameter smaller than the rings 2804, but larger than the middle internal diameter 2806.
  • the mesh sleeve 2800 is designed such that the wires 2802 bend only slightly, within their elastic deformation range.
  • the configuration of the wires 2802 is such that they resist plastic deformation when a pin of the appropriate size is inserted.
  • the mesh sleeve 2800 and the pins are therefore able to withstand many contact cycles without damage to themselves or degradation of the electrical connections.
  • the pins and sockets can withstand 3000 or more connection cycles.
  • Figure 29 is an exploded view of the vehicle-side coupling portion 2406 and shows a shielding mechanism 2902.
  • the shielding mechanism 2902 separates and isolates data conductors from power conductors in the connection system.
  • Figure 29 only depicts the vehicle-side coupling portion 2406, a similar shielding mechanism is employed in the battery-side coupling portion 2456.
  • the shielding mechanism 2902 is particularly designed to prevent electromagnetic or other electrical interference from degrading the signals carried by the data conductors and interfaces 2418. As mentioned, electric vehicles require high voltage and current electricity, which can disrupt nearby electrical communication signals. Due to the desire to employ data and power connections on the same connector 2400, such interference must be prevented.
  • Figure 30 is a perspective view of the shielding mechanism 2902 included in the vehicle-side connector 2402 and the battery-side connector 2452.
  • Figure 31 includes planar views of all sides of the shielding mechanism 2902 of Figure 30 .
  • the shielding mechanism 2902 surrounds the data conductors 910 and the data interfaces 2418, 2468.
  • the shielding mechanism 2902 is made of a metal, preferably a conductive metal material which is designed to counteract the electromagnetic field produced by the power conductors and power interfaces 2416, 2466.
  • the wall thickness of the shielding mechanism 2902 depends on the strength of the electromagnetic field and the location of the shield relative to the field. In some embodiments, the wall thickness is between 0.1 mm and 5 mm depending on the electro-magnetic interference generated by the power conductors.
  • the general dimensions of the shielding mechanism 2902 are such that there is sufficient room for the data wires to be encased.
  • the shielding mechanism 2902 is "L" shaped, or elbow shaped.
  • the specific dimensions of the L-shaped shielding mechanism are dependant upon the constraints and frequencies of the electro-magnetic interference generated by the power conductors.
  • the material of the shielding mechanism 2902 establishes an internal electromagnetic force that substantially counteracts the external field generated by the nearby high voltage conductors. This counteracting field is created simply by the interaction of the specially designed shield wall and the nature of the material. It does not require additional power or grounding systems in order to function properly. This is especially beneficial given the desire to employ as simple and robust a connection system as possible.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Battery Mounting, Suspending (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Body Structure For Vehicles (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Lock And Its Accessories (AREA)
  • Warehouses Or Storage Devices (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Air Bags (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Vehicle Body Suspensions (AREA)
  • Power Steering Mechanism (AREA)
EP11161769.2A 2008-09-19 2009-09-18 System zum Befestigen von Batterien in elektrischen Fahrzeugen Active EP2340951B1 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US9872408P 2008-09-19 2008-09-19
US14969009P 2009-02-03 2009-02-03
US20691309P 2009-02-04 2009-02-04
US16623909P 2009-04-02 2009-04-02
US12/428,932 US8006793B2 (en) 2008-09-19 2009-04-23 Electric vehicle battery system
EP09792744A EP2335106B1 (de) 2008-09-19 2009-09-18 System für den elektrischen anschluss von batterien an elektrofahrzeuge

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EP2340951A2 true EP2340951A2 (de) 2011-07-06
EP2340951A3 EP2340951A3 (de) 2011-10-26
EP2340951B1 EP2340951B1 (de) 2013-06-19

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EP11181292A Withdrawn EP2397383A1 (de) 2008-09-19 2009-09-18 Batterieaustauschstation
EP09792745A Active EP2231447B1 (de) 2008-09-19 2009-09-18 Schiebetürvorrichtung für eine Batterieumtauschstation
EP09792744A Active EP2335106B1 (de) 2008-09-19 2009-09-18 System für den elektrischen anschluss von batterien an elektrofahrzeuge
EP11189231.1A Active EP2420418B1 (de) 2008-09-19 2009-09-18 Batterieaustauschstation
EP11161769.2A Active EP2340951B1 (de) 2008-09-19 2009-09-18 System zum Befestigen von Batterien in elektrischen Fahrzeugen
EP13160407.6A Withdrawn EP2607192A3 (de) 2008-09-19 2009-09-18 Batterieaustauschstation

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EP11181292A Withdrawn EP2397383A1 (de) 2008-09-19 2009-09-18 Batterieaustauschstation
EP09792745A Active EP2231447B1 (de) 2008-09-19 2009-09-18 Schiebetürvorrichtung für eine Batterieumtauschstation
EP09792744A Active EP2335106B1 (de) 2008-09-19 2009-09-18 System für den elektrischen anschluss von batterien an elektrofahrzeuge
EP11189231.1A Active EP2420418B1 (de) 2008-09-19 2009-09-18 Batterieaustauschstation

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EP (6) EP2397383A1 (de)
JP (4) JP4797119B2 (de)
CN (2) CN102203651B (de)
AT (1) ATE533674T1 (de)
AU (2) AU2009293022B2 (de)
CA (3) CA2837982C (de)
CY (1) CY1112532T1 (de)
DK (4) DK2340951T3 (de)
ES (1) ES2377804T3 (de)
HK (3) HK1160935A1 (de)
HR (1) HRP20120057T1 (de)
IL (4) IL211711A (de)
PL (1) PL2231447T3 (de)
PT (1) PT2231447E (de)
SI (1) SI2231447T1 (de)
WO (2) WO2010033881A1 (de)

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IL211711A (en) 2013-06-27
IL211777A0 (en) 2011-08-01
DK2335106T3 (da) 2013-06-24
JP4797119B2 (ja) 2011-10-19
JP5443448B2 (ja) 2014-03-19
US8164300B2 (en) 2012-04-24
JP2012503470A (ja) 2012-02-02
AU2009293024B2 (en) 2012-08-30
CA2736889A1 (en) 2010-03-25
EP2340951B1 (de) 2013-06-19
AU2009293024A1 (en) 2010-03-25
IL211777A (en) 2014-02-27
EP2335106B1 (de) 2013-03-27
IL211711A0 (en) 2011-08-01
CN102203651A (zh) 2011-09-28
HK1160935A1 (en) 2012-08-17
CN102203651B (zh) 2015-02-11
ES2377804T3 (es) 2012-04-02
ATE533674T1 (de) 2011-12-15
JP2015028939A (ja) 2015-02-12
PL2231447T3 (pl) 2012-06-29
US20110044791A1 (en) 2011-02-24
WO2010033881A1 (en) 2010-03-25
CN102202944A (zh) 2011-09-28
AU2009293022A1 (en) 2010-03-25
EP2231447A1 (de) 2010-09-29
EP2340951A3 (de) 2011-10-26
CN102202944B (zh) 2015-01-28
JP5882414B2 (ja) 2016-03-09
JP2012006591A (ja) 2012-01-12
US20110303509A1 (en) 2011-12-15
CA2837982A1 (en) 2010-03-25
US8006793B2 (en) 2011-08-30
WO2010033883A1 (en) 2010-03-25
JP2011518710A (ja) 2011-06-30
DK2340951T3 (da) 2013-09-23
EP2397383A1 (de) 2011-12-21
CY1112532T1 (el) 2015-12-09
EP2420418B1 (de) 2013-04-17
SI2231447T1 (sl) 2012-07-31
US20100071979A1 (en) 2010-03-25
DK2231447T3 (da) 2012-03-05
HK1166292A1 (en) 2012-10-26
US8013571B2 (en) 2011-09-06
EP2231447B1 (de) 2011-11-16
EP2607192A3 (de) 2013-10-30
CA2737620C (en) 2016-10-25
EP2335106A1 (de) 2011-06-22
DK2420418T3 (da) 2013-07-29
IL220780A0 (en) 2012-08-30
US20110297470A1 (en) 2011-12-08
CA2736889C (en) 2014-03-18
HK1160820A1 (en) 2012-08-17
HRP20120057T1 (hr) 2012-04-30
CA2837982C (en) 2019-01-08
PT2231447E (pt) 2012-02-22
EP2420418A1 (de) 2012-02-22
IL218547A0 (en) 2012-04-30
AU2009293022A2 (en) 2011-04-21
AU2009293022B2 (en) 2016-02-25
US20100141206A1 (en) 2010-06-10
CA2737620A1 (en) 2010-03-25
EP2607192A2 (de) 2013-06-26
US8517132B2 (en) 2013-08-27

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